A Visual Studio Plugin for CodeStats. You can configure it under Extras -> Options -> CodeStats and set your machine to whatever key you have received from https://CodeStats.net/. The Api will sum up all your experience and send it to the CodeStats Pulse server. At the end, you get to see how often you used specific languages.
If you have any issues, you can always find me on the C# Discord(i´m xeronik): https://discord.gg/6tzJGns
Also, CodeStats has a Gitter in which you can reach out for Nicd, the creator of CodeStats.